I also don't understand why the fuck women do this. Nature uses infertility as a way to convey teh message to women they they should not have children...or anymore of them, depending on the circumstances. It is not an invitation to challenge the body and "the almighty God who makes precious miracles".
The worst thing about in-vitro fertilization is that it fucks with a woman's eggs badly, and the damn breeder could end up with an unnatural number of fetuses. Hell, I read a story of a woman who sought IVF and she miscarried. Why? Because of intense cell division, she had 26 tiny fetuses in her uterus that were too small and undeveloped to live.
As far as fertility treatments, they are only successful about 20%-25% of the time - what a fucking waste! That money could go toward research for breast cancer or anything else that people are dying from - infertility isn't a fucking debilitating disease, and I wish people would stop treating it as such.